Season brisket with salt and pepper. Preheat BBQ grill. Place roast on grill over indirect heat and grill for 45 minutes. During last 10 minutes of cooking place directly over heat and brown roast. Take off grill and place in bag with vegetables and water. Poke 4 holes in bag after closing.

Preheat oven to 300°F. and place roast in the bag on a cookie sheet. Put roast in oven and cook for 3 hours or until fork tender.